What does the Ipk rating mean?
The Ipk rating of a surge protector is the protectors maximum surge current rating. It is typically published as per phase rating (i.e. 160,000A/Phase), but it can also be expressed as a per mode rating (i.e. 80,000A Line-Neutral, 80,000A Line-Ground). This rating is a critical parameter with regard to the application on surge protective devices. This parameter is usually expressed as an 8 x 20 microsecond current pulse, which is the accepted industry standard waveform used to test and compare surge protective devices.
